This is Max from the Shopify Guru Team.
If you wanted to create a shipping zone for your customers in India, it sounds like that might be the best solution.
Go to your Admin and click Settings > Shipping and scroll down to the Shipping Zones section and add a zone for the options you want to offer within India. More about Shipping and Zones in this doc. I think Manual Rates would be a good solution for this!
Anything else, please feel free to reach out to us 24/7.